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US Patent: 70,393
Improved emery-wheels for grinding and polishing saws, &c.
Patentee: George L. Benton (exact or similar names) - Rochester, NY USPTO Classifications: 451/548, 76/37, 76/45 Tool Categories: metalworking machines : grinders : sharpening machines : saw sharpening machines Assignees: George L. Benton - Rochester, NY John Greenwood - Rochester, NY Manufacturer: John Greenwood & Co. - Rochester, NY Witnesses: R. F. Osgood J. A. Davis	Patent Dates: Granted: Nov. 05, 1867 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for John Greenwood & Co.

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